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| 垫圈; 定位止推环; 隔环; 隔离垫圈; 定位套管 | |||
| 隔圈; 定距环; 间距环; 支承圈; 间隔圈; 支撑环; 分隔圈; 隔离环; 支撑圈; 间隔垫圈; 支承环; 定常的 | |||
| распорное кольцо: 1 phrase in 1 subject |
| Technology | 1 |
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